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This reverts commit 78b558a1.

Reason for revert:
1 tests failed: ['vulkan_content_browsertests on (nvidia-quadro-p400-ubuntu-stable) GPU on Linux']
https://ci.chromium.org/p/chromium/builders/ci/Linux%20FYI%20Release%20%28NVIDIA%29/9112

Original change's description:
> Add SkiaOutputDeviceGL
> 
> This CL moves some platform specific logic out of
> SkiaOutputSurfaceImplOnGpu and into SkiaOutputDeviceGL. I also added the
> hooks to support partial swaps and tested on an i7 gLinux laptop.
> 
> Bug: 920344
> Change-Id: I77b86442fef2340094de9fa93057f1fa2af2f50b
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1539792
> Commit-Queue: Jonathan Backer <backer@chromium.org>
> Reviewed-by: Peng Huang <penghuang@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#645059}

TBR=penghuang@chromium.org,backer@chromium.org

Change-Id: I6eff445f1e0c9d4b250267c89b2b937f71270e2e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 920344
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1542422Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#645281}